Preview

homeostasis function of the kidney

Good Essays
Open Document
Open Document
1297 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
homeostasis function of the kidney
Blood Water Homeostasis or Osmoregulation
Osmoregulation is the process by which the body regulated the osmotic pressure of any organism’s fluids in order to keep the homeostasis of the organisms’ water level constant. Therefore osmoregulation is used to keep the bodily fluid from being too diluted or too concentrated. An osmotic pressure is used to measure the ability of water to move from one solution to another solution through osmosis. Osmotic pressure refers to tendency for a liquid solution to diffuse therefore moving from a lower to higher concentration across a membrane. As it is critical for humans to maintain a regulated osmotic pressure they are able to gain an isotonic solution which would mean that there is no total loss or gain of fluids or salts into the cells of the body. Rather there is a steady and constant flow of substances in and out of the cell membrane.
There are a few types of osmoregulation; these are called osmoconformers and osmoregulators. In the body osmoconformers try to match the body osmolality to that of the environment the body is situated in. osmoregulators on the other hand regulate the osmolality of their body, therefore keeping the osmolality constant.
In humans the kidney plays a huge part in the osmoregulation of the body’s internal environment. Regulation of water in the human body is carried out through the excretion of waste urine from the body. Hormones which include: the antidiuretic hormone, aldosterone and angiotensin II are used in the body to help to increase the permeability of the collecting ducts found in the kidney. This further allows diffusing to occur easily, it also allows the kidney to be able to reabsorb water and prevent it from being excreted. Humans are also able to regulate by controlling the total amount of water that is passed out of the body through urine waste or sweat, this is carried out with the help of the excretory system.
To prevent the loss or the gain of water from cell in the body,

You May Also Find These Documents Helpful

  • Powerful Essays

    The renal system would compensate by controlling the output of acids, basis or carbon dioxide from the body within urine.…

    • 1503 Words
    • 6 Pages
    Powerful Essays
  • Powerful Essays

    The kidneys function to regulate the volume, composition, and pH of body fluids and remove metabolic wastes from the blood in the process.…

    • 1421 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    1. Increasing the Na+ and Cl- increases the osmotic pressure because raising the concentration of the solutes on one side of the membrane results in a larger concentration difference between both sides of the membrane. If the molecules were impermeable to the membrane, the only way to restore balance between concentrations would be for the movement of water across the membrane to the area of higher solute…

    • 796 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Lab on Homeostasis

    • 988 Words
    • 4 Pages

    Take a control of the heart rate. So, the pulse taker will count the number of beats for 15 seconds and multiply by 4 to get the bpm.…

    • 988 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Regulating body temperature is one instance where homeostasis occurs (Thermoregulation). Some methods are conduction, where the body absorbs/removes heat via contact surfaces; convection, which is the upward flow of warm air or the downward flow of cold air past the body; radiation, where heat is transferred/received via infrared waves on non-contact surfaces; evaporation where water on the body is evaporated giving a cooling effect.…

    • 302 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    The body responds to changes in the external environment in many different ways. Some examples of homeostatic responses would be a change in…

    • 1023 Words
    • 3 Pages
    Powerful Essays
  • Good Essays

    lab report

    • 549 Words
    • 2 Pages

    During this laboratory exercise will identify by the graph given which is isotonic, hypotonic, or hypertonic. The kidneys are a pair of fist-sized organs located outside the peritoneal cavity on each side of the spine. The kidney is a highly specialized organ that maintains the internal environment of the body by selectively excreting or retaining various substances according to specific body needs. The process of urine formation and adjustment of blood composition involves three processes: glomerular filtration, tubular reabsorption, and tubular secretion. The first part of the process of urine formation occurs in the glomeruli which act as filters, allowing water, glucose, salt and waste materials to pass through to the Bowman’s capsule but preventing and red blood cells and plasma proteins to pass through. Reabsorption occurs in the proximal tubules of the nephron. Water, glucose, amino acids, sodium and other nutrients are reabsorbed into the bloodstream in the capillaries surrounding the tubules. Water moves via the process of osmosis: movement of water from an area of higher concentration to one of lower concentration. Tubular secretion is the final step in the process of urine formation which transfers materials from peritubular capillaries to renal tubular lumen and occurs mainly by active transport. ADH is secreted by the posterior pituitary (neurohypophysis) when there is a decrease in water concentration (increase in osmolarity) which will cause an increase in water reabsorption (decrease in osmolarity). ADH most important function is to conserve the fluid volume of your body by reducing the amount of water passed out in the urine. When there is a decrease in serum sodium levels (decrease in osmolarity) the ACTH causes the adrenal cortex to release aldosterone, thereby increasing sodium reabsorption in the distal convoluted tubules of the kidney (increasing osmolarity). Aldosterone also acts on the kidney to reabsorb sodium and water…

    • 549 Words
    • 2 Pages
    Good Essays
  • Better Essays

    Diabetes Insipidus

    • 727 Words
    • 3 Pages

    1. Describe the mechanism by which normal fluid regulation in the body occurs? The kidneys remove extra body fluids in the bloodstream; this waste is stored in the bladder. If the fluid regulations system is working right the kidneys will make less urine to save your body’s fluids so you don’t become dehydrated.…

    • 727 Words
    • 3 Pages
    Better Essays
  • Good Essays

    Homeostasis Review

    • 5382 Words
    • 21 Pages

    1. List the four biological levels of organization in a human in order from most simple to most complex.…

    • 5382 Words
    • 21 Pages
    Good Essays
  • Satisfactory Essays

    When the osmoreceptors detect the change in osmotic pressure this increases the hormone ADH (antidiuretic hormone) which then causes the kidneys to retain some of the fluid, so the water level within the body can stay at the level it should.…

    • 393 Words
    • 2 Pages
    Satisfactory Essays
  • Satisfactory Essays

    Homeostasis

    • 803 Words
    • 6 Pages

    Homeostasis A condition in which the internal environment of the body remains relatively constant despite changes in the external environment. Examples would be the maintenance of body temperature and levels of glucose in the blood Homeostatic mechanisms are designed to reestablish homeostasis when there is an imbalance.…

    • 803 Words
    • 6 Pages
    Satisfactory Essays
  • Good Essays

    It functions to help control the amount of water that is permeable to the walls of the collecting duct, meaning the hormone helps make urine more concentrated. The main factor stimulating the release of ADH is the osmolarity in the blood; which is the concentration of solutes outside of cells. Typically, ADH is released under conditions of elevated osmolarity above a certain level and not under lower osmolarity conditions. This increase in osmolarity is detected by pressure receptors (osmoreceptors) in the hypothalamus. Once released, ADH makes its way to the kidneys where it is able to bind to receptor proteins on cells in the collecting ducts of nephrons. ADH allows water to leave the collecting duct and be put back into circulation. On the cellular level, ADH promotes more aquaporins to be put into the membrane of the collecting duct. This occurs when ADH binds to the receptors mentioned earlier. This binding sends a signal for the cell to produce more aquaporin-2 (AQP-2), a protein known as an ADH-regulated water channel. With more channels available in the apical membrane, water is able to diffuse out of the cell to reduce osmolarity. The overall effect of this hormone is to put water back into circulation to lower the osmolarity of the blood to return the body to homeostasis. The increased osmolarity may be caused dehydration (also increases heart rate) or other things. In that case, ADH helps to return heart rate, water and ion levels to homeostatic…

    • 1616 Words
    • 7 Pages
    Good Essays
  • Good Essays

    help in the control of the amount of water in the body. Aldosterone helps regulates in…

    • 577 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Homeostasis

    • 570 Words
    • 3 Pages

    Why might the special senses of smell and taste be important for helping to maintain homeostasis in the body?…

    • 570 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Osmolarity

    • 1332 Words
    • 5 Pages

    Osmotic concentration, formerly known as osmolarity,[1] is the measure of solute concentration, defined as the number of osmoles (Osm) of solute per litre (L) of solution (osmol/L or Osm/L). The osmolarity of a solution is usually expressed as Osm/L (pronounced "osmolar"), in the same way that the molarity of a solution is expressed as "M" (pronounced "molar"). Whereas molarity measures the number of moles of solute per unit volume of solution, osmolarity measures the number of osmoles of solute particles per unit volume of solution.[2]…

    • 1332 Words
    • 5 Pages
    Good Essays